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  1. Asteroid - Wikipedia

    An asteroid is a minor planet —an object larger than a meteoroid (thus 1 meter or larger) that is neither a planet nor an identified comet —that orbits within the inner Solar System or is co …

  2. ASTEROID Definition & Meaning - Merriam-Webster

    The meaning of ASTEROID is any of the small rocky celestial bodies found especially between the orbits of Mars and Jupiter. How to use asteroid in a sentence.

  3. What Is an Asteroid? | NASA Space Place – NASA Science for Kids

    Sep 25, 2025 · Asteroids are small, rocky objects that orbit the sun. Although asteroids orbit the sun like planets, they are much smaller than planets. A close-up image of the asteroid Ida …

  4. Asteroid | Definition, Size, & Facts | Britannica

    6 days ago · Asteroid, any of a host of small bodies, about 1,000 km (600 miles) or less in diameter, that orbit the Sun primarily between the orbits of Mars and Jupiter in a nearly flat ring …

  5. ASTEROID Definition & Meaning | Dictionary.com

    Any of numerous small solar system bodies that orbit the Sun primarily in the asteroid belt, a region between the orbits of Mars and Jupiter. Asteroids are intermediate in size between …

  6. ASTEROID | English meaning - Cambridge Dictionary

    As the giant planet Jupiter circles the asteroid belt, its powerful gravity knocks asteroids and asteroid fragments out of their orbits. Of the 2,000 or so asteroids orbiting the sun close to the …

  7. Asteroid: Definition, Size, Difference, Visibility, Facts

    Oct 5, 2024 · Asteroids are small, rocky objects orbiting the Sun, primarily found in the asteroid belt between Mars and Jupiter. The asteroid belt contains over 1 million asteroids, with an …